.body{
	font-size: 14px;
	line-height: 30px;
	color: rgb(0,0,0);
}
.mainContent{
	width: 800px;
	margin: 60 auto;
	
}
.title{
	text-align: center;
}
.comment{
	float:left;
	width: 800px;
	text-align: right;
	margin-top: 20px;
}
.comment input{
	width: 400px;
	height: 30px
}
.comment button{
	width: 60px;
	height: 30px;

}
.comment_form{
	margin-top: 60px;
}